Combustion ring for pot type burners of the hydroxylating type



TYPE BURNERS B. HAYTER ET AL OMBUSTION RING FOR POT Filed Nov. 9, 1944 OF THE HYDROXYLATING TYPE May 17, 1949.

\Olt O 5 a W J Patented May 17, 1949 UNITED STATES PATENT OFFICE COMBUSTION RING FOR POT TYPE BURN- ERS OF THE HYDROXYLATING TYPE Application November 9, 1944, Serial No. 562,676

.in the course of the specification.

The invention is illustrated more or less diagrammatically in the accompanying drawings wherein:

Figure 1 is a vertical section; and

Figure 2 is a section taken on the line 2-2 of Figure 1.

Like parts: are indicated by like symbols throughout the specification and drawings.

Referring to the drawings, I generally indicates an outer shell, the upper extension ll of which may constitute the exterior of a hot water tank. The bottom of the shell may have any suitable aperture 2, closed by any suitable access door 2a. In order to permit the entry of air for the burner there is provided a bottom partition 3 with air inlets la. 4 is any suitable bottom ring or wall for the water tank and 5 is any suitable central combustion chamber or duct which at the same time surrounds the central combustion space and serves as the inner wall of the tank of water to be heated. Note-that the duct 5 has a downwardly extending edge 5a extending below the dome-shaped ring or partition 4. 6 indicates a combustion ring for the below described burner. It is centrally apertured as at I, the aperture being upwardly surrounded by a flange 8. Inwardly extending from the flange 8 is a hood portion or structure 9 terminating in an annulus In with a central aperture Illa. The hood portionS may be provided with any suitable apertures [2. It will be understood that the number and shape of the apertures may be varied to suit conditions. For example. the apertures may form, if desired, a practically continuous slot broken only by any suitable intermediate connection elements, but we illustrate circular apertures connected by intermediate wall portions l3. between the flange 8 and the annulus III. M is a cup-shaped flame deflector which may be of thin metal stock, which is shown as secured to the annulus l and which is useful in connection with lighting the burner, as will later appear. Note that the outer edge of the member I, as at i5, is spaced inwardly somewhat from the opposed face of the member 5. I6 is any suitable packing between the lower portion a of the member 5 and the top of the ring 6. The flange 8 serves as a guide for centering the ring, but if desired an outer flange ll may be employed.

It generally indicates any suitable pot having a closed bottom or end l9 and a liquid fuel inlet duct 20. The pot is provided with a plurality of primary air inlets 2| located at various levels in the pot and preferably arranged in rows extending circumferentially thereabout. The top row of secondary air inlets 22 is inclined upwardly and inwardly toward the aperture 1 in the flame ring. It will be noted also'that the secondary inlets 22 are both larger and more closely spaced than the inlets 2|. 23 is any suitable pilot ring centrally apertured as at 24 and mount-- ed on any suitable supports'25. It is shown as located above the lowest row of primary air inlets 2|.

The pot and flame ring structure may be mounted in any suitable fashion. We illustrate them for example as upwardly thrust against the lower edge of the member 5a as by any suitable removable expansion member which may include a headedscrew member 30 screw threaded into a base member 3|. As illustrated in Figure 1, the expansion member may be seated upon the bottom partition 3 and by rotating either the member 3| or screw member 30, the pot may be raised or lowered.

In the operation of the burner, liquid fuel is admitted along the duct 20 and flows upon the bottom I9 of the pot. It is there vaporized by the heat of combustion taking place in or above the pot. At the pilot stage the primary air is provided by the single row of primary air inlets below the pilot ring 23. Combustion then takes place at or above the pilot ring. When the rate of flow is increased to the high fire stage all of the primary inlets 2i are supplying primary air and the final and fully combustible mixture is completed by the addition of the secondary air which flows through the secondary air inlets 22. Com bustion then takes place at and above the top of V the pot. In order to control the flame and to provide silent combustion we employ a special flame ring which includes the annular outer portion 6 which surrounds an aperture 1. EX-

.tending upwardly from the inner edge of the annular portion is the generally cylindrical portion 8. i0 is an upper annulus surrounding the central flame aperture Ilia. The portions 8 and ID are connected by the intermediate portion 9. The flame ring is outwardly notched as at 26 to take the securing screws or elements 21.

We find it desirable to provide the apertures l2 in the portion 9 of the flame ring. This is important for example in connection with forming the flame. It is important in hot water heaters of the type herein shown that the flame be propv 'erlysized, and shaped in relation to the shape of the combustion chamber.

In practice, the top of the flame ring herein shown results in a substantially quieter combustion. Furthermore the employment of the holes 82 in connection with a flame ring shaped as herein shown, provides or forms a flame of proper shape to heat the sides of the central duct or combustion chamber 5. This central combustion chamber is ideally adapted for hot water heaters and is surrounded by the water to be heated. Our flame ring produces a flame which expands above the top of the flame ring and forms a compact ball of flame in contact with the surrounding wall or duct 5. Thus there is an ideal heat exchange situation for heating the hot water which surrounds the wall 5. In lighting the burner, lighted matches or lighted bits of scrap may be dropped down from above through the member 5. We-find it advantageous to employ the cup or. guide it to insure that the lighted matches drop into the pot and are effective to ignite the hydrocarbon in the pot, as it is initially vaporized by the match or lighting member.

It will be realized that whereaswe have described and shown a useful and operative device, nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of the invention. We therefore wish our description and drawings to be taken as in a broad sense illustrative or diagrammatic, rather than as limiting us to my precise showing.

We claim:

1. In a combined combustion ring and flame deflector for use with burner pots of pot type burners, an outer ring portion formed and adapted to engage the upper edge of a pot, and extending radially inwardly from said pot edge,

, a flame passage member of generally cylindrical form, at the inner edge of said ring, a hood portion extending upwardly and inwardly from an upper portion of said flamepassage member, said hood defining a central aperture coaxial with said flame passage member and of substantially smaller diameter and an upwardly and outwardly flared deflector element extending from an upper part of said hood portion.

2. In a combined combustion ring and flame deflector for use with burner pots of pot type burners, an outer ring portion formed and adapted to engage the upper edge of a pot, and extending radially inwardly from said pot edge, a flame passage member of generally circular cross section, at the inner edge of said ring, a hood portion extending upwardly and inwardly from an upper portion of said flame passage member, said hood defining a central aperture coaxial with said flame passage member and of substantially smaller diameter, and an upwardly and outwardly flared deflector element extending from an upper part of said hood portion.

3. In combination with a liquid fuel burner pot having a closed end, an open end, and a side wall, a plurality of primary air inlet apertures located therein and circumferentially spaced thereabout, and a row of secondary air inlet apertures located adjacent to the open end of the pot, a flame ring, partially closing the open end of the pot, a cylindrical extension on the flame ring defining a central aperture in the ring and extending beyond the open end of the pot, a centrally apertured hood extending from the cylindrical extension away from the pot, the diameter of the central aperture in the hood being less than the diameter of the aperture defined by the cylindrical extension, the wall of the hood being apertured between the cylindrical extension and the central aperture in the hood.

4. In combination with a liquid fuel burner pot having a closed end, an open end, and a side wall, a plurality of primary air inlet apertures located therein and circumferentially spaced thereabout, and a row of secondary air inlet apertures located adjacent to the open end of the pot, a flame ring, partially closing the open end of the pot, a cylindrical extension on the flame ring defining a central aperture in the ring and extending beyond the open end of the pot, a centrally apertured hood extending from the cylindrical extension away from the pot, the diameter of the central aperture in the hood being less than the diameter oi. the aperture defined by the cylindrical extension, the wall of the hood being apertured between the cylindrical extension and the central aperture in the hood, a deflector carried by the hood extending outwardly away from the pot from the central aperture in the hood.

5. In combination with a liquid fuel burner pot having a closed end, an open end, and a side wall, a plurality of primary air inlet apertures located therein and circumferentially spaced thereabout, and a row of secondary air inlet apertures located adjacent to the open end of the pot, a flame ring partially closing the open end of the pot, a cylindrical extension on the flame ring defining a central aperture in the ring and extending beyond the open end of the pot, a centrally apertured hood extending from the cylindrical extension away from the pot, the diameter of the central aperture in the hood being less than the diameter of the aperture defined by the cylindrical extension, the wall of the hood being apertured between the cylindrical extension and the central aperture in the hood, 2. deflector carried by the hood extending outwardly away from the pot from the central aperture in the hood, and overlying the apertured wall oi the hood.

, BRUCE HAYTER.

IVEITGN D. HUS'I'ON.

REFEBEN CES CITED The following references are of record in the file of this patent:

UN STATES PATENTS Number Name 1 Date 1,530,079 Hood Mar. 17, 1925 1,633,549 Little June 21, 1927 1,897,314 Little Feb. 14, 1933 1,940,879 Pickup Dec. 26, 1933 2,109,946 Little Mar. 1, 1938 2,116,278 Morin et a1 May 3, 1938 2,138,246 Sorg Nov. 29, 1938 2,181,261 Breese Nov. 28, 1939 2,200,861 Peoples May 14, 1940 2,237,890 Sabine Apr. 8, 1941 2,267,531 Martin Dec. 23, 1941 2,272,423 Moore Feb. 10, 1942 2,333,478 Focke Nov. 2, 1948 2,342,272 Hayter' Feb. 22, 1944 2,353,438 Breese July 11, 1944 2,364,791

Horne Dec. 12, 1944 

